"Investigators discovered new evidence, new charges were brought, the suspect was arrested and the state now stands ready for trial," said Ron Ishoy, a spokesman for the Broward State Attorney's Office.

Authorities have not yet disclosed what the new evidence is. At a hearing Tuesday, Belizaire was ordered jailed without bond on lesser charges: three counts of second-degree murder with a firearm. Such charges don't require a grand jury vote.

In a prepared statement, Sheriff Al Lamberti said his agency never relented in its investigation.

"When two young women and an innocent baby boy are gunned down, we have to find justice," Lamberti said. "Since the morning of the murders, this case has been a priority of the Broward Sheriff's Office and the homicide detectives who never stopped working on it."

Belizaire's attorney, Alexander John Michaels, said Belizaire will plead not guilty to the charges. A hearing has been scheduled for Friday, where Michaels plans to push for his client's jail release on the basis he isn't a flight risk.

Felony suspects are required to be brought to trial within 175 days of their arrest, unless the suspects waive that right. Michaels said he thinks Belizaire was rearrested in a bid by authorities to beat the 175-day deadline. His client was first arrested Jan. 22.

If Belizaire is not tried in time, he could have charges against him dropped, Michaels said.

The State Attorney's Office declined to say whether any deadline factored into Belizaire's arrest.

Still, prosecutors likely would argue that the 175-day deadline period instead began Monday, the day of Belizaire's second arrest, said Nova Southeastern University law professor Bob Jarvis. It would be up to a judge to resolve the issue, said Jarvis, who is not involved in the case.

Investigators said Belizaire had been in a relationship with Barnett that included domestic violence. Barnett updated her Facebook page moments before the slayings, indicating Belizaire was outside the Somerset Condominiums, investigators said.

Barnett's baby boy, who was also in the apartment, was found unharmed in his mother's arms. Belizaire is reportedly the boy's father, though his attorney has suggested that may not be so.